Integrated wireless and wired hands-free device for a mobile phone

Abstract

An integrated wireless and wired hands-free device for a mobile phone has a blue-tooth wireless transceiving module. When the blue-tooth wireless transceiving module receives an incoming signal, it sends an activation control signal to an audio mix switch, which switches on a voice transmission channel to be used by the blue-tooth wireless transceiving module. The incoming signal is transmitted through the audio mix switch and a control device and finally output by a loudspeaker to be heard by a user, who can then achieve intercommunication via a microphone. The intercom voice signal is transmitted through the control device, the audio mix switch and the blue-tooth transceiving module and finally sent out by the blue-tooth transceiving module. The audio mix switch is also connected to a wired transmission device providing connection with a mobile phone lacking the blue-tooth wireless transmission function to accomplish reception of an incoming signal and intercommunication.

1 . An integrated wireless and wired hands-free device for a mobile phone, comprising: 
 a blue-tooth wireless transceiving module used to receive and output an incoming signal and send out an activation control signal;    an audio mix switch used for receiving said activation control signal to switch a voice transmission channel to be used by said blue-tooth wireless transceiving module for receiving and transmitting said incoming signal from said blue-tooth wireless transceiving module;    a control device used to receive and transmit said incoming signal from said audio mix switch;    a loudspeaker used to receive said incoming signal from said control device for output to be heard by a user;    a microphone used to receive and transmit an intercom voice signal of the user, said intercom voice signal being transmitted through said control device, said audio mix switch and said blue-tooth wireless transceiving module and finally sent out by said blue-tooth wireless transceiving module; and    a wired transmission device connected to said audio mix switch, said wired transmission device being connected to a mobile phone without the wireless transmission function so that said mobile phone can accomplish voice transmission via said wired transmission device, said voice transmission channel being used by said wired transmission device to accomplish reception of an incoming call and intercommunication of said mobile phone when said blue-tooth wireless transceiving module does not send out said activation control signal to said audio mix switch.    
   
   
       2 . The integrated wireless and wired hands-free device for a mobile phone as claimed in  claim 1 , wherein said incoming signal is received by an antenna and transmitted to said blue-tooth wireless transceiving module, and said blue-tooth wireless transceiving module transmits said intercom voice signal to said antenna for emission.  
   
   
       3 . The integrated wireless and wired hands-free device for a mobile phone as claimed in  claim 1 , wherein a loudspeaker volume adjustment device is further provided to adjust the output volume of said loudspeaker.  
   
   
       4 . The integrated wireless and wired hands-free device for a mobile phone as claimed in  claim 1 , wherein said microphone is an external one and can be placed in an appropriate position in a car.